Feed-grinding mill



(No Model.) 3 SheetsSheet 1.

T. L. PHILLIPS.

FEED GRINDING MILL.

No. 587,555. Patented Aug. 3,1897.

WW 1 M D 5% gM v a t e e h S m e e h S 3 HM G um m m D Tm h (No Model.)

Patented Aug. 3,1897.

: norms vzrsns co, PHOTGLITHO. wlsums'ruu, n. c.

(No Model.) 3 Sheets-Sheet 3.

T. L. PHILLIPS. FEED GRINDING MILL.

No. 587,555. Patented Aug. 3,1897.

Tn: NORRIS Pzrzns co pmmurm. wuumcron. n. c.

UNITED STATES PATENT QEEICE.

THOMAS L. PHILLIPS, OE AURORA, ILLINOIS, ASSIGNOR TO THE CHALLENGE IVIND MILL AND FEED MILL COMPANY, OF BATAVIA, ILLINOIS,

FEED-GRINDING MILL.

SPECIFICATION forming part of Letters Patent No. 587,555, dated August 3, 1897.

Application filed May 5, 1896. Serial No. 590,275. (No model.)

To all whom it may COILCT/L. rest upon the gears D and D and the ring F Be it known that I, THOMAS L. PHILLIPS, and are held in place by the gear bolts or studs of Aurora, in the county of Kane, and in the E and E. A hopper N, of usual form, is se- State of Illinois, have invented certain new cured to the top of the shell K, as shown. 5 and useful Improvements in Feed-Grinding The portions of the brackets M and M that Mills; and I do hereby declare that the folrest upon the ring E serve to retain the latter lowing is a full, clear, and exact description in position against movement upward. thereof, reference being had to the accompa- The two grinding-rings O and P, the former nying drawings, in which being the movable and the latter the station- 10 Figure 1 is a perspective view of my mill; ary one, are mounted, respectively, upon the Fig. 2, a vertical section through the same; drum H and-the casing L. The grinding- Fig. 3, a longitudinal section. Fig. 4 is a defaces of said rings incline inward and downtail top plan view of the cob-breaker, and ward, and the movable ring being the upper Fig. 5 a detail View of a portion of one of the one the result is that the pressure during .65

I 5 grinding-rings to show the dress thereof. grinding is upward, the effect of which is to.

Letters of like name and kind refer to like avoid contact of the grinding-faces with each parts 1n each of the figures. other with consequent wear.

The object of my invention is to provide a That the tendency of the upper ring is upcheaply-constructed, efficient, durable, and ward during grinding will be apparent when 2o easily-operated corn or feed grinding mill; it is considered that the material being and to this end said invention consists in the ground, especially when as it first enters begrinding-mill having the construction and tween the rings itis large, offers resistance combination of parts substantially as hereinto the rotation of the ring, and such resistafter described. ance must necessarily cause an upward tend- In the carrying of my invention into pracency of the ring because of the downward and tice I mount the parts of my mill upon a suitinward inclination of its periphery. able base A, which preferably has the three- Another advantage of the downward and armed form shown. Supported by said base inward inclination of the grinding-faces is at its center is a vertical shaft B, that is anthat as the grain being ground gravitates 3o gular in cross-section. Mounted upon the downward to the point of outlet it is ground shaft just above the base is a gear 0, that is much finer than is the case where the larger in mesh with three gears D and D, placed, end of the rings is downward. respectively, upon the three arms of the base The grinding-rings are preferably made and journaled each upon a stud or bolt E, quite shallow and their faces inclined at an 3 5 that projects above the upper side of an arm. angle of about seventy degrees from the hori- Said gears D and D mesh with and receive zontal, as after experimenting I have found power from an internally-geared ring F, that that such a construction produces the best reis provided with suitable means, as a sweep sults. G, by which it may be revolved to drive the The space between the grinding-rings is 4o shaft B. adjustable by moving the revolving ring 0 Mounted upon the upper end of the shaft vertically, and this is best done by providing is a conical drum H, whose upper side is proa screw Q, that is tapped through a nut at vided with numerous teeth h to cooperate the transverse center of the bar I to engage with like teeth 1', that project downward from the top of the drum II 'at its center to limit 5 5 a diametrically-extcnding bar I, said parts the upward movement of the drum.

constituting a cobbreaker. The bar I is at- In Fig. 5 is illustrated aportion of the movtached to the upper edge of a substantially able ring 0 to show the manner of dressing cylindrical shell K, which is bolted at its botthe grindingfaces of the rings, the dress of tom to a circular or ring-form casting L. The course being coarsest at the top and bec'onr I00 50 latteris attached to and supported by several ing finer toward the bottom of the rings. I arms or brackets M and M, that respectively do not, however, limit myself to this or any particular manner of dressing the grindingsurfaces.

lhe gr'ound product passes from between the grinding-rings into a cone-shaped delivery-spout R, whose discharge-mouth is eccentrically located, and as the shaft passes through the wall of said spout a portion thereof to a point above the level of the lower edge of the grinding-rings is inclosed by a tube S, that rests at its lower end and is attached to a false bottom or portion T, arranged in an inclined position within the spout. Said tube prevents the ground material from passing through the opening provided for the shaft.

The use of the angular shaft is of material advantage compared with a round one in that it permits of cheaper construction, and as the various parts mounted thereon are fitted somewhat loosely any irregularities in position with reference to their cooperating parts which would result in binding or unusual wear will be avoided by the shaft parts accommodating themselves to the others.

Having thus described my invention, what I claim is- 1. In a grinding-mill, the combination of the base, a grinding-ring, a support fixedly holding the same, attached to the base, a second grinding-ring, and gearing for revolving the latter, comprising in part a toothed ring, which rests on said base, the support for the fixed grinding ring extending over said toothed ring, substantially as and for the purpose specified.

2. In a grinding-mill, the combination of the base, a grinding-ring, several brackets to which the latter is attached, a second grinding-ring, gear-wheels to impart movement thereto, mounted on said base, and an internally toothed ring for actuating said wheels, also resting on said base, said brackets resting on said wheels and toothed ring, substantially as and for the purpose set forth.

3. In a grinding-mill, the combination of the base, the shaft, supported by the same carrying a grinding-ring, a gear on said shaft, above the base, a series of gears, mounted each on a bolt or stud on the base, meshing with the shaft-gear, means for driving said seriesof gears, brackets above the latter secured to their pivot-bolts, and a grindingring attached to said brackets, substantially as and for the purpose shown.

4. In a grinding-mill, the combination of the grinding-rings having downwardly and inwardly inclined grinding-faces, a shaft for revolving the upper one of said rings, relatively to which it may move in an axial direction, and a screw passing through a suitable support and abutting against a part of said ring, to restrain its upward movement, substantially as and for the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 25th day of April, 1896.

THOMAS L. PHILLIPS.

. IVitnesses:

IV. J. Evans, E. T; PRINDLE. 

